As far as personality, Marsha is extremely neat, moderately active and a little bit nice. But she is extremely shy and very serious. Like all townies in The Sims 2, her relationships with other townies are usually randomized at the start of the game.

Marsha has the same facial structure as Joe Carr and the same barrette hairstyle as Angela and Lilith Pleasant. When she grows into a teenager, she will have the same halo hairstyle as Olive Specter. The same occurrence happens if the player creates an older Sim with the halo hairstyle and changes their age to a child before exiting CAS. It is unknown if Marsha underwent the same process during the development.